CompoundList
Sign in
Solvent dyes and colorants for plastics

Yellow No. 2

Also known as 1-Phenylazo-2-naphthylamine, 1-(Phenylazo)-2-naphthylamine, FD&C Yellow No. 3

CAS 85-84-7Formula C16H13N3Molar mass 247.30 g/molEC 201-636-3
3 suppliers listed
Get quotes Compare 3 suppliers
Yellow No. 2 chemical structure, C16H13N3, CAS 85-84-7
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Red platelets from absolute alcohol
Melting point
103 °C
Solubility
Very soluble in ethanol, acetic acid
HS code
320419
Category
Solvent dyes and colorants for plastics
Illustrative photo, red pigment powder in an open fibre drum in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Yellow No. 2?

Plain description, key identifiers and synonyms

Yellow AB is a member of azobenzenes.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-phenyldiazenylnaphthalen-2-amine
CAS number
85-84-7 CAS number cross-checked
EC number
201-636-3
Molecular formula
C16H13N3
UNII
3VSI4D701X
MDL number
MFCD00046382
InChIKey
KLCDQSGLLRINHY-UHFFFAOYSA-N
InChI
InChI=1S/C16H13N3/c17-15-11-10-12-6-4-5-9-14(12)16(15)19-18-13-7-2-1-3-8-13/h1-11H,17H2
SMILES (canonical and isomeric)
C1=CC=C(C=C1)N=NC2=C(C=CC3=CC=CC=C32)N

Synonyms

  • 1-Phenylazo-2-naphthylamine
  • 1-(Phenylazo)-2-naphthylamine
  • FD&C Yellow No. 3
  • Ext D&C Yellow No. 9
  • Yellow ab
  • Solvent Yellow 5
  • C.I. Food Yellow 10
  • Grasal Yellow
  • Jaune AB
  • 1-(Phenyldiazenyl)naphthalen-2-amine
  • Cerisol Yellow AB
  • Dolkwal Yellow AB
  • C.I. Solvent Yellow 5
  • FD and C Yellow No. 3
  • FD & C Yellow 3
  • 1-Benzeneazo-2-naphthylamine
  • 1-(Phenylazo)-2-naphthalenamine
  • Zlut maselna ab
  • 2-Naphthalenamine, 1-(phenylazo)-
  • A.F. Yellow No. 2
  • 2-Naphthylamine, 1-(phenylazo)-
  • Zlut rozpoustedlova 5
  • 1-Benzene-azo-beta-naphthylamine
  • C.I. 11380
  • (E)-1-(phenyldiazenyl)naphthalen-2-amine
Show all 36 synonyms
  • 1-Benzeneazo-beta-naphthylamine
  • 2-Naphthalenamine, 1-(2-phenyldiazenyl)-
  • AF Yellow No. 2
  • CI Solvent Yellow 5
  • Ext D and C Yellow No. 9
  • 1-(Phenylazo)naphthalen-2-amine
  • 1-phenyldiazenylnaphthalen-2-amine
  • AZO Benzene 1-naphthalene, 2'-amino-
  • CI 11380
  • 1-phenylazonaphthalen-2-amine
  • A.F. Yellow No.2

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Red platelets from absolute alcoholexp.
Melting point
103 °Cexp.
Solubility
Very soluble in ethanol, acetic acidexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
247.30 g/molcalc.
Exact mass
247.1109 Dacalc.
LogP (octanol/water)
4.84calc.
Topological polar surface area
50.74 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
2calc.
Heavy atoms
19calc.
Rings
3calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccc(N=Nc2cccc3ccccc23)cc1

c1ccc(N=Nc2cccc3ccccc23)cc1

3 rings, 18 atoms, the Diazene, naphthalenylphenyl- ring system.

1,098 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Yellow No. 2 suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 3 suppliers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

3 suppliers in 2 countries

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

Yellow No. 2 price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Biological stain.

Formerly used in the US for coloring oleomargarine.

Former uses: dye in foods, drugs, and cosmetics.

Industries and functions

Functional uses

  • Dye

How it is made

Formerly by coupling of diazotized aniline with 2-naphthylamine

/Yellow AB/ can be synthesized by coupling diazotized aniline with 2-naphthylamine ...

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Yellow No. 2 is traded under.

HS 3204.19Indicative HS code

Synthetic organic colouring matter and preparations based thereon as specified in note 3…

World exports in 2024
$1.08B
+0.2% vs 2023, imports $1.14B
2019 to 2024
Top exporters
  1. United States23.7%
  2. India * partner reported12.4%
  3. China9.0%
Top importers
  1. Germany7.5%
  2. France * partner reported6.4%
  3. Mexico5.4%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Yellow No. 2 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Yellow No. 2, based on the data on this page

What is Yellow No. 2?

Yellow AB is a member of azobenzenes.

What is the CAS number of Yellow No. 2?

The CAS registry number of Yellow No. 2 is 85-84-7.

What is the molecular formula and weight of Yellow No. 2?

The molecular formula of Yellow No. 2 is C16H13N3 and its molar mass is 247.30 g/mol.

What is Yellow No. 2 used for?

Biological stain. Formerly used in the US for coloring oleomargarine. Former uses: dye in foods, drugs, and cosmetics.

Is Yellow No. 2 hazardous?

No GHS hazard classification for Yellow No. 2 is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Yellow No. 2?

Yellow No. 2 is usually classified under HS code 320419 (Synthetic organic colouring matter and preparations based thereon as specified in note 3…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Yellow No. 2?

CompoundList lists 3 suppliers of Yellow No. 2 in India and China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Yellow No. 2 in India?

2 suppliers in India list Yellow No. 2 on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Yellow No. 2?

Suppliers quote Yellow No. 2 on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Yellow No. 2

Get quotes for Yellow No. 2

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Yellow No. 2
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Yellow No. 2 with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/yellow-no-2-85-84-7" title="Yellow No. 2 structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Solvent dyes and colorants for plastics or HS code 320419

3 suppliers
Free quotes, contact stays private
Get quotes